Read the given statements and select the correct option.Statement 1: A...
- Animals that belong to the phylum Platyhelminthes to Chordata are all triploblastic.
- But Platyhelminthes and aschelminthes belong to pseudocoelomates.
- Annelids, arthropods, echinoderms and chordates are under eucoelomates. This means not all triploblastic animals are eucoelomates.
- Pseudocoelomates have false coelom while eucoelomate animals only have the true coelom.
Hence, both statement 1 and statement 2 are incorrect.
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Read the given statements and select the correct option.Statement 1: A...
Statement Analysis
Statement 1: All triploblastic animals are eucoelomates.
Statement 2: They have a false coelom.
Option Analysis
a) Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
This option is incorrect as statement 2 is not a correct explanation of statement 1.
b) Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
This option is incorrect as statement 2 is incorrect.
c) Statement 1 is correct and statement 2 is incorrect.
This option is correct as statement 1 is true but statement 2 is false.
d) Both statements 1 and 2 are incorrect.
This option is correct as both statements are false.
Correct Answer: d) Both statements 1 and 2 are incorrect.
Explanation
- Triploblastic animals are those animals that have three germ layers in their embryonic development, namely ectoderm, mesoderm, and endoderm.
- Eucoelomates are animals that have a true coelom, which is a body cavity lined by mesoderm on both sides. A true coelom is derived from the mesoderm.
- False coelom or pseudocoelom is a body cavity that is not fully lined by mesoderm. It is derived from the blastocoel, which is a fluid-filled cavity in the embryo.
- Some triploblastic animals have a true coelom, while others have a false coelom or no coelom at all.
- Therefore, statement 1 is incorrect as not all triploblastic animals are eucoelomates.
- Statement 2 is incorrect as it suggests that all triploblastic animals have a false coelom, which is not true.
Hence, the correct answer is option d) Both statements 1 and 2 are incorrect.
Read the given statements and select the correct option.Statement 1: A...
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